CN102965459A - Distributing system and method for improving multi-ring burden distribution surface segregation and heap top of blast furnace - Google Patents
Distributing system and method for improving multi-ring burden distribution surface segregation and heap top of blast furnace Download PDFInfo
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- CN102965459A CN102965459A CN2012104743930A CN201210474393A CN102965459A CN 102965459 A CN102965459 A CN 102965459A CN 2012104743930 A CN2012104743930 A CN 2012104743930A CN 201210474393 A CN201210474393 A CN 201210474393A CN 102965459 A CN102965459 A CN 102965459A
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Abstract
The invention discloses a distributing system and method for improving multi-ring burden distribution surface segregation and heap top of a blast furnace, belonging to the technical field of bell-less top burden distribution of the blast furnace. On the basis of the original multi-angle multi-ring burden distribution system, a burden distribution mode table and a burden distribution 20-step period setting table are added, so that the two burden distribution tables can be periodically and freely selected and used. Because burden distribution angles set in the two burden distribution mode tables are complementary, the heap top and the segregation between every two adjacent burden distribution angles in the original multi-ring burden distribution mode can be eliminated. The existing multi-ring burden distribution mode has the problems that burden distribution rings are discontinuous and uneven burden distribution, heap top, segregation and the like are caused by discontinuous change among burden distribution angles; the method provided by the invention has the advantages of solving the problems of the existing multi-ring burden distribution mode, remarkably improving flatness and ventilation of the surface, enhancing air permeability, stabilizing airflow, and increasing gas utilization rate.
Description
Technical field
The invention belongs to the charging in bell-less top of blast furnace technical field, particularly propose a kind of method of improving the segregation of blast furnace polycyclic distributing charge level, heap point.
Background technology
The polycyclic distributing mode that existing blast-furnace smelting extensively adopts, to fall behind x, the y plane distance at its width between centers blast furnace center and judge and set the cloth angle and in the corresponding cloth number of turns of each cloth angle initialization by calculating furnace charge, wherein the viewpoint definition of distributor rotation is the β angle, and the angle of distribution chute extended line and vertical direction is defined as the α angle.In the blast furnace polycyclic distributing method that extensively adopts now, as shown in Figure 1, because the cloth angle is discontinuous variation between adjacent cloth ring and the ring, the relatively low groove of charge level can appear between adjacent cloth ring, and the charge level at cloth ring place is prone to the situation of heap point, thereby affect furnace charge air permeability, cause the unstable and reduction gas utilization rate of blast furnace air-flow.
In addition, prolong in the distributor chute downslide process because the feedstock particle size difference can cause the material macrobead descending at upper, small-particle at furnace charge.Like this, after raw material drops to charge level since macrobead from the blast furnace medullary ray away from, small-particle decentering line is nearer, easily cause the charge level size distribution uneven in the situation of every batch of material repetition equal angular cloth, different apart from the granularity of blast furnace medullary ray different positions, the charge level ventilation property is not good.
Summary of the invention
The objective of the invention is to solve in the existing polycyclic distributing mode the inconsistent problem of ventilation property that has the cloth inequality causes between each angle charge level planeness not and cause because of the size distribution inequality.
It is poor that a kind of cloth system that improves blast furnace polycyclic distributing charge level segregation heap point comprises that 2 cloth data registers, cloth table mask register, controller, distributor slip; Store respectively cloth table 1 and cloth table 2 in 2 cloth data registers, store the cloth option table in the cloth table mask register; Controller is connected with 2 cloth data registers and cloth table mask register, and controller is realized control to cloth angle and the number of turns by the data that read cloth table 1, cloth table 2 and cloth option table; Controller is connected with distributor slide grain, and the angle of control distributor slide grain; Cloth table 1 includes the fields such as step number, ore deposit angle, burnt angle, the ore deposit number of turns, the burnt number of turns with cloth table 2; Wherein to count the step number of table 2 be from 1 to 10 for cloth table 1 and cloth; Ore deposit angle in cloth table 1 and the cloth table 2 is complementary, burnt angle is complementary, described complementary relationship is according to means such as cross temperature and top imagings, according to the blast furnace charge level situation, the heap paddy of cloth before ore deposit angle or the burnt angular setting cloth after make it just fallen into, the ore deposit angle of this moment or burnt angle cloth ore deposit angle or the burnt angle before relatively is called complementary relationship.When cloth table 1 or cloth table 2 were not performed, operator can make amendment to the data of the register at unenforced cloth table place.The cloth option table comprises step number and cloth table numbering, and step number is 1-20, and the cloth table is numbered 1 or 2.Each cloth cycle is that a tank ore deposit, tank Jiao's cloth is finished, and cloth cycle takies a step number in the cloth option table; The non-cloth of carrying out step number is numbered by the staff and sets at any time in the cloth option table.The step number of cloth option table is reciprocation cycle.
Main method step of the present invention is as follows:
Be the ore deposit in step 2, the emptying tank, whether controller is judged mineral aggregate in the tank: if without mineral aggregate, then finish this tank cloth, current cloth table step number refers to back step number 1, enters step 4; If mineral aggregate is arranged, then controller reads cloth and counts the corresponding ore deposit of current step number angle in the table; When the value of ore deposit angle is " 0 ", then keep a cloth angle until after the batch can emptying, finish this tank cloth, current cloth table step number refers to back step number 1, enters step 4; When the value of ore deposit angle is not " 0 ", enter step 3;
It is current ore deposit angle that step 3, controller adjustment cloth are counted angle, carries out the cloth number of turns that the current step number chats number of turns sets; When a few numbers of cloth reach the corresponding setting number of turns of current step number, next step number that enters current cloth table, step 2 is returned in redirect;
Be burnt in step 4, the emptying tank, controller judges whether burnt material is arranged in the tank: if without Jiao's material, then finish this tank cloth, enter next step number in the current cloth option table, enter step 6; If burnt material is arranged, then controller reads cloth and counts the corresponding burnt angle of current step number in the table; When the value of burnt angle is " 0 ", then keep a cloth angle until after the batch can emptying, finish this tank cloth, enter next step number in the current cloth option table, enter step 6; When the value of burnt angle is not " 0 ", enter step 5;
It is current burnt angle that step 5, controller are adjusted the cloth angle, carries out the cloth number of turns that the burnt number of turns sets in the current step number; When the cloth number of turns reaches the corresponding setting number of turns of current step number, enter next step number of current cloth table, step 4 is returned in redirect;
Step 6, judge whether to finish whole cloth work, if finish, then finish cloth work; If do not finish, enter the next cloth cycle: controller reads the corresponding cloth table numbering of current step number in the cloth option table, selects corresponding cloth table, enters the step number 1 in the cloth table, enters step 2.
The method adopts two cloth tables, is set to complementation by cloth table angle, can make the furnace charge of selecting different cloth table data to carry out cloth drop on the charge level different positions, reaches the effect of eliminating heap point and segregation.Original distributing mode is for setting several groups of cloth angles and setting the cloth number of turns on the respective angles.For example, first set angle is put the m circle, second set angle put the n circle, program α angle in carrying out the blowing process arrives first set angle the β angle is write all over the m circle after, the α angle is adjusted into rapidly second set angle continue blowing the n circle write all in the β angle after, program continues to carry out the 3rd set angle and continues blowing, until emptying in the batch can.Therefore between first set angle and second set angle, will occur caving on the corresponding charge level, and first set angle and second cloth ring charge level position corresponding to set angle will occur piling sharp.After adopting two cloth tables, " cloth table 1 " is complementary with " cloth table 2 " interior cloth ring angle of setting, after namely carrying out cloth by " cloth table 1 " interior setting data, the charge level recessed position that forms between the adjacent ring, the angle of setting in " cloth table 2 " is filled up just.
It is two cloth tables setting " 20 steps of cloth " (per 1 charge was 1 step) option table, can be that Set arbitrarily is selected data in which cloth table to carry out periodicity to replace cloth in cycle of a circulation maximum 20 steps (i.e. 20 batch of materials), when 20 batches of clothes or when running into value in cloth step and being " 0 ", indication cycle finishes, program is got back to the first step in " 20 steps of cloth " automatically, restarts the new cloth cycle.The present invention is on the basis of original material loading procedure, and a newly-increased cover cloth angle and cloth number of turns control, one are overlapped the cloth charge cycle that material loading procedure is selected, a cover step-length was 20 steps and set and a program of overlapping the current cloth of monitoring " step number ".Furnace superintendent according to cross temperature or top imaging data in " 20 steps of cloth " thus the cloth cycle set and when select angle and number of turns data in which cloth table that material is distributed in specified location, a certain position cross temperature excess Temperature or the excessively thin situation of charge level in finding stove, with reference to the value in " step number ", judge that the current data of choosing in which cloth table carry out cloth, revise the data in the current cloth table of not selecting, can not affect in the ongoing cloth situation, change the distributing mode of next batch, to the timely feed in required cloth position.
Show in real time current cloth state, two cloth tables are carried out according to the setting automatic cycle selection in " 20 steps of cloth ", " 20 steps of cloth " reach the data in " cloth table " in case set, do not need human intervention, program is carried out automatically in order, and the numerical value when running into " cloth table " in represents this cloth charge end for " 0 " or when finishing last column data and carrying out, program enters next step in the cloth cycle, begins to prepare lower batch cloth.When the numerical value in " cloth 20 step " for " 0 " or when finishing the 20th batch of cloth, expression cloth charge end cycle, program comes back to cloth the 1st and goes on foot.
After adopting two cloth tables to replace cloth, the charge level unfairness situation that original single table distributing mode produces has obtained effective improvement, and the ventilative homogeneity of charge level gets a promotion.
Description of drawings
Fig. 1 is the polycyclic distributing mode that blast furnace now adopts, charge level situation synoptic diagram in cloth process and the stove.
Fig. 2 is existing polycyclic distributing mode, angle and cloth number of turns data setting picture.
Fig. 3 replaces the control of distributing mode and angle, cloth number of turns data setting picture by two cloth tables after the distributing mode of the present invention change.
After Fig. 4 is the invention process, the situation synoptic diagram of charge level in the stove.
Embodiment
Fig. 1～4 are the specific embodiment of the present invention, and the present invention will be further described below in conjunction with accompanying drawing.
The present invention is by analyzing such as Fig. 1, and the charge level that existing multi-angle polycyclic distributing mode causes is uneven, and the situations such as heap point, segregation are improved the problem and shortage of finding.
Exemplifying embodiment 1:
The first step in original data setting table, can be carried out to " ore deposit angle ", " burnt angle " maximum ten groups angle initialization, and the cloth number of turns corresponding to each angle initialization.Now increase a data setting table, with original data setting table called after " cloth table 1 ", newly-increased data setting table called after " cloth table 2 ".
Second step will increase newly-increased " cloth table 2 " register that the data setting table is corresponding in the PLC program, and increases the condition of choosing before " cloth table 1 " register and " cloth table 2 " register.
In the 3rd step, " 20 steps of cloth " the distributing mode cycle that increases is set table, and the longest cloth cycle was 20 steps, and when cloth proceeded to the corresponding step in cycle, the numerical value of inputting in the step number according to correspondence was chosen corresponding cloth table.When this step is made as " 0 ", represent this cloth end cycle, again begin the new cloth cycle from the first step.
The 4th step, setting corresponding " 20 steps of cloth " register in program, the logic judgement that reaches " current step " passometer and judge the cloth end cycle.
In the 5th step, the monitored picture of increase " current step " and " current cloth " is convenient to monitor current cloth state.
Charge level situation synoptic diagram in the polycyclic distributing mode that Fig. 1 blast furnace now adopts, cloth process and stove.As seen from the figure, existing distributing mode exists charge level uneven, the situation of heap point, segregation occurs, affects ventilation property.
Fig. 2 invents the polycyclic distributing mode data setting picture before not implementing for this reason, its chats angle, burnt angle row four figures, expression α angle angle; The ore deposit number of turns, burnt number of turns row one digit number represent the number of turns of cloth under the set angle of this row α angle.This shows between each angle of cloth to have the space, cloth is discontinuous variation.
Fig. 3 replaces the control of distributing mode and angle, cloth number of turns data setting picture by two cloth tables after the distributing mode of the present invention change.Two distributing modes can be selected arbitrarily alternately cloth, thereby make the cloth angle complementary, eliminate heap point and segregation situation between adjacent cloth angle.
Fig. 4 is by after the present invention's change, the charge level situation in the stove.As seen, adopt two cloth tables to replace cloth after, the charge level unfairness situation that original single table distributing mode produces has obtained effective improvement, the ventilative homogeneity of charge level gets a promotion.
Claims (6)
1. one kind is improved the sharp cloth system of blast furnace polycyclic distributing charge level segregation heap, it is characterized in that: it is poor that described cloth system comprises that 2 cloth data registers, cloth table mask register, controller, distributor slip; Wherein store respectively cloth table 1 and cloth table 2 in 2 cloth data registers, store the cloth option table in the cloth table mask register; Controller is connected with 2 cloth data registers and cloth table mask register, and controller is realized control to cloth angle and the number of turns by the data that read cloth table 1, cloth table 2 and cloth option table; Controller is connected with distributor slide grain, and the angle of control distributor slide grain; When cloth table 1 or cloth table 2 were not performed, operator can make amendment to the data of the register at unenforced cloth table place; The cloth option table comprises step number and cloth table numbering; Cloth cycle takies a step number in the cloth option table; The non-cloth of carrying out step number is numbered by the staff and sets at any time in the cloth option table; The step number of cloth option table is reciprocation cycle.
2. the cloth system that improves blast furnace polycyclic distributing charge level segregation heap point as claimed in claim 1, it is characterized in that: described cloth table 1 includes step number, ore deposit angle, burnt angle, the ore deposit number of turns, burnt number of turns field with cloth table 2.
3. the cloth system that improves blast furnace polycyclic distributing charge level segregation heap point as claimed in claim 2, it is characterized in that: described cloth table 1 is from 1 to 10 with the step number that cloth is counted table 2; The step number of described cloth option table is 1-20, and the cloth table of described cloth option table is numbered 1 or 2.
4. the cloth system that improves blast furnace polycyclic distributing charge level segregation heap point as claimed in claim 2 is characterized in that: the ore deposit angle in described cloth table 1 and the cloth table 2 is for complementary, and burnt angle is complementary.
5. the cloth system that improves blast furnace polycyclic distributing charge level segregation heap point as claimed in claim 4, it is characterized in that: described complementation is according to means such as cross temperature and top imagings, according to the blast furnace charge level situation, the heap paddy of cloth before ore deposit angle or the burnt angular setting cloth after make it just fallen into, the ore deposit angle of this moment or burnt angle cloth ore deposit angle or the burnt angle before relatively is called complementation.
6. one kind is improved the sharp distributing process of blast furnace polycyclic distributing charge level segregation heap, it is characterized in that:
Step 1, controller read the step number 1 corresponding cloth table numbering in the cloth option table, select corresponding cloth table; Enter the step number 1 in the cloth table;
Step 2, when being the ore deposit in the emptying tank, whether controller is judged mineral aggregate in the tank: if without mineral aggregate, then finish this tank cloth, current cloth table step number refers to back step number 1, enters step 4; If mineral aggregate is arranged, then controller reads cloth and counts the corresponding ore deposit of current step number angle in the table; When the value of ore deposit angle is " 0 ", then keep a cloth angle until after the batch can emptying, finish this tank cloth, current cloth table step number refers to back step number 1, enters step 4; When the value of ore deposit angle is not " 0 ", enter step 3;
It is current ore deposit angle that step 3, controller adjustment cloth are counted angle, carries out the cloth number of turns that the current step number chats number of turns sets; When a few numbers of cloth reach the corresponding setting number of turns of current step number, next step number that enters current cloth table, step 2 is returned in redirect;
Step 4, when being burnt in the emptying tank, whether controller is judged burnt material in the tank: if expect without Jiao, then finish this tank cloth, enter next step number in the current cloth option table, enter step 6; If burnt material is arranged, then controller reads cloth and counts the corresponding burnt angle of current step number in the table; When the value of burnt angle is " 0 ", then keep a cloth angle until after the batch can emptying, finish this tank cloth, enter next step number in the current cloth option table, enter step 6; When the value of burnt angle is not " 0 ", enter step 5;
It is current burnt angle that step 5, controller are adjusted the cloth angle, carries out the cloth number of turns that the burnt number of turns sets in the current step number; When the cloth number of turns reaches the corresponding setting number of turns of current step number, enter next step number of current cloth table, step 4 is returned in redirect;
Step 6, judge whether to finish whole cloth work, if finish, then finish cloth work; If do not finish, enter the next cloth cycle: controller reads the corresponding cloth table numbering of current step number in the cloth option table, selects corresponding cloth table, enters the step number 1 in the cloth table, enters step 2.
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| CN201210474393.0A CN102965459B (en) | 2012-11-20 | 2012-11-20 | Distributing system and method for improving multi-ring burden distribution surface segregation and heap top of blast furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110628972A (en) * | 2019-10-30 | 2019-12-31 | 石横特钢集团有限公司 | Novel material distribution method for reducing segregation of conventional material distribution |
| CN114015826A (en) * | 2021-11-09 | 2022-02-08 | 重庆钢铁集团电子有限责任公司 | Control method for blast furnace top material distribution |
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| CN101250602A (en) * | 2008-03-20 | 2008-08-27 | 重庆钢铁(集团)有限责任公司 | Blast furnace chute polycyclic distributing method |
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| CN101250602A (en) * | 2008-03-20 | 2008-08-27 | 重庆钢铁(集团)有限责任公司 | Blast furnace chute polycyclic distributing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628972A (en) * | 2019-10-30 | 2019-12-31 | 石横特钢集团有限公司 | Novel material distribution method for reducing segregation of conventional material distribution |
| CN110628972B (en) * | 2019-10-30 | 2021-06-29 | 石横特钢集团有限公司 | Novel material distribution method for reducing segregation of conventional material distribution |
| CN114015826A (en) * | 2021-11-09 | 2022-02-08 | 重庆钢铁集团电子有限责任公司 | Control method for blast furnace top material distribution |
| CN114015826B (en) * | 2021-11-09 | 2022-08-23 | 重庆钢铁集团电子有限责任公司 | Control method for blast furnace top material distribution |
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